Subsoil attachment for plows



April 14, 1931. NICHOLS 1,800,899

SUBSOIL ATTACHMENT FOR FLOWS Filed March 6, 1930 JAW s/ Suventor J9 Jam Zl'cholw Patented Apr. 14, 1931 UNITED STATES JOHN NICHOLS, F BLUFF CITY, ARKANSAS S UBSOIL ATTACHMENT FOR FLOWS Application filed March 6,

The object of my invention is to provide a simple, inexpensive and eiiicient subsoil attachment, adapted to be readily applied to different standard types of plows without necessitating any alteration in the construction of either the plow or attachment and which is capable of ready adjustment to enable it to be arranged inthe desired position with relation to the plow and to be securely retained in such relative position.

With these and other objects in View, my invention consists in the construction and novel combination of parts hereinafter more fully described and illustrated.

In the drawings chosen to illustrate my invention, the scope whereof is set forth in the appended claims Figure 1 is a side elevation of a standard breaking plow, partly broken away and part- 29 ly in section, with my subsoil attachment applied, the latter also having some of its parts broken away;

Figure 2, a section on the line 22 of Figure 1;

Figure 3, a section on the line 3--3 of Figure 1; and

Figure 4, a detail view showing a modified form for utilization in securing the lower arm of the U-shaped frame of the attachment to the standard of a breaking plow when said standard is not normally provided with a bolt opening for securing the attachment in the manner disclosed in Figure 1. 5 Referring to the drawings 10 indicates the beam of a standard breaking plow, the rear end of which terminates in the usual standard 11 which carries at its lower end a breaking plow 12. The standard 11, as is usual, is provided on each side with a longitudlnal channel 13, which latter I utilize in securing my attachment, as will hereinafter appear.

My improved attachment comprises a U- shaped member 14 positioned in trailing relation to the standard 11 and secured to the latter at the outer end of its upper arm by a bolt 15 passing through the usual opening of the standard provided for attaching the forward ends of the plow handle braces, while the outer end of the lower arm of the 1930. Serial No. 433,680.

member 14 is secured to the standard 11 by a bolt 16, said bolt also passing through the usual opening provided in the standard for attachment of the inner ends of the plow handles. The bolts 15 and 16 areconnected by a plate 17 and secured to this plate is one end of a brace 18. The other end of said brace is secured to the beam 10 as shown. EX- tending contiguous with the frame 14 along its curved portion is a curved strip 18, the ends of which are offset, as at 19, and secured to the frame 14 by bolts 20.. By this construction it will be apparent that the frame 14 and strip 18 coact to provide a guideway 21 for a purpose that will presently appear.

Secured to the standard 11 between the arms of the U-shaped frame 14- is clamping member A formed of two opposed similar hook elements 22 and 23. The hook ends of these elements are respectively engaged in the grooves 13 and they are clamped upon the standard 11 by a clamping bolt 24 which extends through the stems of the hook elements 22 and 23. Pivotally secured on a bolt 25 and embracing the elements 22 and 23 are similar plates 26 between which latter is rigidly secured by bolts 27 the forward end of the beam 28 of a subsoiler, which beam 6X- tends through the guideway 21. The rear end of the beam 28 terminates inthe usual standard 29 on thelower end of which is carried a standard subsoil blade 30. It will be noted that the plates 26 are provided with additional registering openings 81 through which the bolt 25 1s interchangeably engageable to adjust the beam 28 and thereby adjust the working position of the subsoilpblade 30. Also, the member 14 and strip 18 are provided with aseries of registering openings 32 through which bolts 33 are interchangeably engageable to span the guideway 21 and act as stops to limit movement of beam 28 011 its pivot, thelower stop thus provided preventing the subsoiler from cutting too deep, while the upper stop serves to holdtlie subsoiler in tough or hard ground. For strengthening the clamping member A braces g lconnect the bolts 25 and 15. p

In some instances conventional breaking plows may notbe provided with a bolt opening in their standards for the attachment of the lower arm of the frame 14 and under such conditions I utilize a hook clamp 85 secured to the lower arm of the frame 14: by a clamping bolt 36, said clamp cooperating withone of the grooves13 of the standard 11 i as shown-in Figure 4. When the clamp 35 is employed the plate 17 is dispensed with and the brace 18 can be either dispensed with or secured to theattachment at some. other point to be determined by the particular con: ditions and requirements. 1

I claim 1. The combinationwith a plow including a downwardly extending'standard, of a U- shaped frame secured to said standard and including a guide passage, a bracket secured to said standardbetween the arms of'the frame, a subsoil beam'having adjustable pivotal connection with said bracket and extending through saidpassage, said subsoil beam terminating in a standard, and a subsoil blade carried by the lower end of said standard. V w

2. The combination with a plow including a downwardly extending standard, of a U- shaped guide frame secured to said standard and including a guide passage, 'a bracket secured to said standard between the'arms of the frame, said bracket comprising two clamping jaws connected together by a clamping bolt, plates having adjustable pivotal connection'with a bolt carried by the bracket, a subsoil beam fixedly secured betweensaid plates and extending through said passage,

said subsoil beam terminating in a standard, and a subsoil blade carried by the lower end of said standard.

3. The combination with a plow including a downwardlyextending; standard, of a U- signature.

blade carried by the lower end of said standard, a plate connecting the ends of the U- shaped frame, and a brace member having one end connected to said plate and its other end connected to the first named standard.

5. A subsoil attachment for plows including a U-shaped frame adapted for attachment to a plow, said frame having a guide passage, a clamping bracket located between the i arms of said frame for attachment to a plow, plates having -adjust-able pivotal connection with said clamping bracket, a subsoil beam fixed between said plates and extending through said guide passage, said subsoil beam V clamping bracket located between the arms of said frame for attachment to a plow, a subsoil beam having adjustable pivotal connection with said bracket and extending through said guide passage, stops extending across said passage and through the member and strip to limit movement of the beam in the passage, said subsoil beam terminating in a standard, and a subsoil blade carried by the lower end of'said standard.

' In testimony whereof I hereunto aflix my JOHN motions;

shaped guide frame secured to said standard I and including aguide passage, a bracket secured to said standard between the arms of the frame, a subsoil beam having adjustable pivotal connection with said bracket and extending through said passage, stops extenddiiferent points therealong to limit movement 'ing across said passage and adjustable to ofthe beam in the passage, said subsoil beam V 1 V terminating in a standard, and 'a subsoil blade carried by thelower end'of said standard. V 4. The combination with a; plow including a beam and downwardly extending standard,

of a U-shaped guide frame secured to said standard and includinga guide passage, two

clamping jaws connected together by a clamping bolt, brace bars having corresponding ends connected to said bracket and their other ends connected to the standard, plates having adjustable pivotal connection with a V bolt whichv connects the brace bar to the bracket, a subsoil beam fixedly secured between said platesand extending through the passage of the U-shaped frame, said subsoil beam terminating in a standard, a subsoil 

